./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f80b27594aadcdaa93090b35b429df9d0a90b0252fa7b12ed0563c83d3b4cc77 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 05:18:07,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 05:18:07,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-06 05:18:07,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 05:18:07,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 05:18:07,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 05:18:07,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 05:18:07,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 05:18:07,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 05:18:07,488 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 05:18:07,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 05:18:07,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 05:18:07,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 05:18:07,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 05:18:07,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 05:18:07,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:18:07,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 05:18:07,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 05:18:07,491 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f80b27594aadcdaa93090b35b429df9d0a90b0252fa7b12ed0563c83d3b4cc77 [2025-02-06 05:18:07,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 05:18:07,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 05:18:07,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 05:18:07,725 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 05:18:07,726 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 05:18:07,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i [2025-02-06 05:18:08,831 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f75bd4a9/9e372b0ec8394fa68b90ea50e462aa48/FLAGe9cdcf961 [2025-02-06 05:18:09,271 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 05:18:09,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i [2025-02-06 05:18:09,296 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f75bd4a9/9e372b0ec8394fa68b90ea50e462aa48/FLAGe9cdcf961 [2025-02-06 05:18:09,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f75bd4a9/9e372b0ec8394fa68b90ea50e462aa48 [2025-02-06 05:18:09,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 05:18:09,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 05:18:09,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 05:18:09,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 05:18:09,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 05:18:09,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:18:09" (1/1) ... [2025-02-06 05:18:09,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7a474f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:09, skipping insertion in model container [2025-02-06 05:18:09,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:18:09" (1/1) ... [2025-02-06 05:18:09,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 05:18:09,624 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[4494,4507] [2025-02-06 05:18:09,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[4554,4567] [2025-02-06 05:18:09,995 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,000 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,000 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,000 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,015 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,015 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,017 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,017 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,018 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,019 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,019 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,019 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[150678,150691] [2025-02-06 05:18:10,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:18:10,297 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 05:18:10,305 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[4494,4507] [2025-02-06 05:18:10,306 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[4554,4567] [2025-02-06 05:18:10,333 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,334 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,334 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,334 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,335 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,340 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,343 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,343 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,343 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:18:10,399 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness_negated.i[150678,150691] [2025-02-06 05:18:10,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:18:10,537 INFO L204 MainTranslator]: Completed translation [2025-02-06 05:18:10,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10 WrapperNode [2025-02-06 05:18:10,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 05:18:10,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 05:18:10,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 05:18:10,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 05:18:10,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,594 INFO L138 Inliner]: procedures = 668, calls = 1038, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 131 [2025-02-06 05:18:10,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 05:18:10,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 05:18:10,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 05:18:10,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 05:18:10,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,621 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 14, 5]. 67 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2025-02-06 05:18:10,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 05:18:10,639 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 05:18:10,639 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 05:18:10,639 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 05:18:10,640 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (1/1) ... [2025-02-06 05:18:10,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:18:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:10,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 05:18:10,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 05:18:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 05:18:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 05:18:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-02-06 05:18:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-02-06 05:18:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 05:18:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 05:18:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 05:18:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-06 05:18:10,686 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 05:18:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 05:18:10,880 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 05:18:10,882 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 05:18:10,919 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4718: havoc #t~mem312.base, #t~mem312.offset;havoc #t~short313;havoc #t~mem314.base, #t~mem314.offset;havoc #t~mem315.base, #t~mem315.offset;havoc #t~short316; [2025-02-06 05:18:10,928 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-06 05:18:11,087 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-02-06 05:18:11,111 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2025-02-06 05:18:11,111 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 05:18:11,119 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 05:18:11,119 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 05:18:11,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:18:11 BoogieIcfgContainer [2025-02-06 05:18:11,120 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 05:18:11,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 05:18:11,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 05:18:11,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 05:18:11,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:18:09" (1/3) ... [2025-02-06 05:18:11,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242d2fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:18:11, skipping insertion in model container [2025-02-06 05:18:11,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:18:10" (2/3) ... [2025-02-06 05:18:11,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242d2fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:18:11, skipping insertion in model container [2025-02-06 05:18:11,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:18:11" (3/3) ... [2025-02-06 05:18:11,126 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness_negated.i [2025-02-06 05:18:11,135 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 05:18:11,136 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_rend_harness_negated.i that has 6 procedures, 67 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-06 05:18:11,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 05:18:11,173 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@171a110b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 05:18:11,173 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 05:18:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 48 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 05:18:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-06 05:18:11,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:11,190 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:11,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:11,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1130872929, now seen corresponding path program 1 times [2025-02-06 05:18:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875493632] [2025-02-06 05:18:11,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:11,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 05:18:11,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 05:18:11,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:11,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-06 05:18:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875493632] [2025-02-06 05:18:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875493632] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:18:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298828232] [2025-02-06 05:18:11,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:11,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:11,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:18:11,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 05:18:11,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 05:18:11,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 05:18:11,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:11,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:11,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 05:18:11,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:18:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-06 05:18:11,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:18:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298828232] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:11,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:18:11,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 05:18:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023082672] [2025-02-06 05:18:11,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:11,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 05:18:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:11,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 05:18:11,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:18:11,713 INFO L87 Difference]: Start difference. First operand has 67 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 48 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:11,731 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2025-02-06 05:18:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 05:18:11,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2025-02-06 05:18:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:11,737 INFO L225 Difference]: With dead ends: 126 [2025-02-06 05:18:11,737 INFO L226 Difference]: Without dead ends: 62 [2025-02-06 05:18:11,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:18:11,743 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:11,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:18:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-06 05:18:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-02-06 05:18:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.302325581395349) internal successors, (56), 44 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-06 05:18:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2025-02-06 05:18:11,774 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 70 [2025-02-06 05:18:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:11,774 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2025-02-06 05:18:11,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2025-02-06 05:18:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-06 05:18:11,777 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:11,777 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:11,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 05:18:11,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 05:18:11,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:11,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -624638336, now seen corresponding path program 1 times [2025-02-06 05:18:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:11,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699777325] [2025-02-06 05:18:11,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:12,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 05:18:12,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 05:18:12,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:12,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-06 05:18:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699777325] [2025-02-06 05:18:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699777325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:12,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:18:12,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 05:18:12,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976297474] [2025-02-06 05:18:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:12,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 05:18:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:12,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 05:18:12,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 05:18:12,547 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-06 05:18:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:12,595 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2025-02-06 05:18:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 05:18:12,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2025-02-06 05:18:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:12,598 INFO L225 Difference]: With dead ends: 72 [2025-02-06 05:18:12,599 INFO L226 Difference]: Without dead ends: 70 [2025-02-06 05:18:12,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 05:18:12,600 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:12,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 382 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:18:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-02-06 05:18:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2025-02-06 05:18:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 49 states have internal predecessors, (60), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2025-02-06 05:18:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2025-02-06 05:18:12,611 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 70 [2025-02-06 05:18:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:12,611 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2025-02-06 05:18:12,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2025-02-06 05:18:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2025-02-06 05:18:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 05:18:12,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:12,613 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:12,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 05:18:12,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:12,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 511756480, now seen corresponding path program 1 times [2025-02-06 05:18:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546553850] [2025-02-06 05:18:12,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:12,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 05:18:12,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 05:18:12,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:12,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:18:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546553850] [2025-02-06 05:18:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546553850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:18:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 05:18:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121000495] [2025-02-06 05:18:12,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:12,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 05:18:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:12,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 05:18:12,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 05:18:12,822 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:12,951 INFO L93 Difference]: Finished difference Result 131 states and 174 transitions. [2025-02-06 05:18:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 05:18:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-02-06 05:18:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:12,956 INFO L225 Difference]: With dead ends: 131 [2025-02-06 05:18:12,956 INFO L226 Difference]: Without dead ends: 71 [2025-02-06 05:18:12,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:18:12,956 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 22 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:12,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 350 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:18:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-06 05:18:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-06 05:18:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 49 states have internal predecessors, (59), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2025-02-06 05:18:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2025-02-06 05:18:12,965 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 71 [2025-02-06 05:18:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:12,966 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2025-02-06 05:18:12,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2025-02-06 05:18:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-06 05:18:12,968 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:12,968 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:12,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 05:18:12,969 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:12,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash 211973896, now seen corresponding path program 1 times [2025-02-06 05:18:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431006356] [2025-02-06 05:18:12,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:12,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-06 05:18:13,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 05:18:13,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:13,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:18:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:13,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431006356] [2025-02-06 05:18:13,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431006356] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:13,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:18:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 05:18:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974513723] [2025-02-06 05:18:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:13,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 05:18:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:13,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 05:18:13,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:18:13,177 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:13,301 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2025-02-06 05:18:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 05:18:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2025-02-06 05:18:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:13,302 INFO L225 Difference]: With dead ends: 137 [2025-02-06 05:18:13,302 INFO L226 Difference]: Without dead ends: 76 [2025-02-06 05:18:13,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-06 05:18:13,303 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:13,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 395 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:18:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-06 05:18:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2025-02-06 05:18:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.25) internal successors, (60), 50 states have internal predecessors, (60), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2025-02-06 05:18:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2025-02-06 05:18:13,315 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 73 [2025-02-06 05:18:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:13,316 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2025-02-06 05:18:13,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2025-02-06 05:18:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 05:18:13,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:13,317 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:13,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 05:18:13,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -626301941, now seen corresponding path program 1 times [2025-02-06 05:18:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015225076] [2025-02-06 05:18:13,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:13,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 05:18:13,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 05:18:13,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:13,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:18:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015225076] [2025-02-06 05:18:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015225076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:13,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:18:13,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 05:18:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107633128] [2025-02-06 05:18:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:13,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 05:18:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:13,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 05:18:13,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:18:13,584 INFO L87 Difference]: Start difference. First operand 70 states and 91 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:13,689 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2025-02-06 05:18:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 05:18:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2025-02-06 05:18:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:13,691 INFO L225 Difference]: With dead ends: 138 [2025-02-06 05:18:13,691 INFO L226 Difference]: Without dead ends: 76 [2025-02-06 05:18:13,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 05:18:13,692 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 28 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:13,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 402 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:18:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-06 05:18:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2025-02-06 05:18:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2025-02-06 05:18:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2025-02-06 05:18:13,706 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 74 [2025-02-06 05:18:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:13,706 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2025-02-06 05:18:13,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-06 05:18:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2025-02-06 05:18:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-06 05:18:13,708 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:13,709 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:13,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 05:18:13,709 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:13,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash -514954486, now seen corresponding path program 1 times [2025-02-06 05:18:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354706289] [2025-02-06 05:18:13,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:13,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-06 05:18:13,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 05:18:13,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:13,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 05:18:14,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:14,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354706289] [2025-02-06 05:18:14,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354706289] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:18:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167076027] [2025-02-06 05:18:14,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:14,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:14,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:14,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:18:14,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 05:18:14,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-06 05:18:14,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 05:18:14,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:14,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:14,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-06 05:18:14,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:18:14,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 05:18:14,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 05:18:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 05:18:15,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:18:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 05:18:15,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167076027] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:18:15,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:18:15,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 10] total 25 [2025-02-06 05:18:15,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611981087] [2025-02-06 05:18:15,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:18:15,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 05:18:15,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:15,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 05:18:15,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2025-02-06 05:18:15,624 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 25 states, 24 states have (on average 5.125) internal successors, (123), 22 states have internal predecessors, (123), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 10 states have call predecessors, (22), 11 states have call successors, (22) [2025-02-06 05:18:19,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:23,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:27,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:31,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:36,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:40,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:40,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:40,530 INFO L93 Difference]: Finished difference Result 165 states and 214 transitions. [2025-02-06 05:18:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 05:18:40,531 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.125) internal successors, (123), 22 states have internal predecessors, (123), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 10 states have call predecessors, (22), 11 states have call successors, (22) Word has length 82 [2025-02-06 05:18:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:40,536 INFO L225 Difference]: With dead ends: 165 [2025-02-06 05:18:40,536 INFO L226 Difference]: Without dead ends: 85 [2025-02-06 05:18:40,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 05:18:40,537 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 84 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 17 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:40,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 985 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 571 Invalid, 6 Unknown, 0 Unchecked, 24.5s Time] [2025-02-06 05:18:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-06 05:18:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2025-02-06 05:18:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 56 states have internal predecessors, (67), 15 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (18), 14 states have call predecessors, (18), 13 states have call successors, (18) [2025-02-06 05:18:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2025-02-06 05:18:40,549 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 82 [2025-02-06 05:18:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:40,550 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2025-02-06 05:18:40,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.125) internal successors, (123), 22 states have internal predecessors, (123), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 10 states have call predecessors, (22), 11 states have call successors, (22) [2025-02-06 05:18:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2025-02-06 05:18:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-06 05:18:40,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:40,553 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:40,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 05:18:40,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:40,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:40,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -48399743, now seen corresponding path program 1 times [2025-02-06 05:18:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919839998] [2025-02-06 05:18:40,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:40,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-06 05:18:40,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-06 05:18:40,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:40,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-06 05:18:41,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919839998] [2025-02-06 05:18:41,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919839998] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:18:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485800880] [2025-02-06 05:18:41,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:41,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:41,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:18:41,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 05:18:41,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-06 05:18:41,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-06 05:18:41,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:41,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:41,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 104 conjuncts are in the unsatisfiable core [2025-02-06 05:18:41,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:18:41,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-02-06 05:18:41,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-02-06 05:18:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 05:18:41,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:18:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485800880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:41,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:18:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2025-02-06 05:18:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31268427] [2025-02-06 05:18:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:41,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 05:18:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:41,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 05:18:41,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-06 05:18:41,655 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 05:18:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:42,199 INFO L93 Difference]: Finished difference Result 230 states and 302 transitions. [2025-02-06 05:18:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 05:18:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2025-02-06 05:18:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:42,200 INFO L225 Difference]: With dead ends: 230 [2025-02-06 05:18:42,201 INFO L226 Difference]: Without dead ends: 164 [2025-02-06 05:18:42,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2025-02-06 05:18:42,201 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 207 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:42,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 448 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 05:18:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-02-06 05:18:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2025-02-06 05:18:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 120 states have internal predecessors, (144), 28 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2025-02-06 05:18:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2025-02-06 05:18:42,215 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 94 [2025-02-06 05:18:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:42,216 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2025-02-06 05:18:42,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 05:18:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2025-02-06 05:18:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-06 05:18:42,217 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:42,217 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:42,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 05:18:42,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:42,421 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:42,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1003921022, now seen corresponding path program 1 times [2025-02-06 05:18:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830850754] [2025-02-06 05:18:42,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:42,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-06 05:18:42,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-06 05:18:42,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:42,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 05:18:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830850754] [2025-02-06 05:18:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830850754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:18:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:18:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 05:18:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839723027] [2025-02-06 05:18:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:18:42,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 05:18:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:42,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 05:18:42,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 05:18:42,758 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2025-02-06 05:18:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:42,827 INFO L93 Difference]: Finished difference Result 182 states and 241 transitions. [2025-02-06 05:18:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 05:18:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 94 [2025-02-06 05:18:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:42,829 INFO L225 Difference]: With dead ends: 182 [2025-02-06 05:18:42,829 INFO L226 Difference]: Without dead ends: 180 [2025-02-06 05:18:42,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:18:42,830 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 3 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:42,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 446 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:18:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-02-06 05:18:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2025-02-06 05:18:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 129 states have internal predecessors, (150), 28 states have call successors, (28), 12 states have call predecessors, (28), 20 states have return successors, (48), 26 states have call predecessors, (48), 25 states have call successors, (48) [2025-02-06 05:18:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 226 transitions. [2025-02-06 05:18:42,857 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 226 transitions. Word has length 94 [2025-02-06 05:18:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:42,857 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 226 transitions. [2025-02-06 05:18:42,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2025-02-06 05:18:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 226 transitions. [2025-02-06 05:18:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-06 05:18:42,859 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:42,859 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:42,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 05:18:42,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:42,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 599519050, now seen corresponding path program 1 times [2025-02-06 05:18:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2422820] [2025-02-06 05:18:42,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:42,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 05:18:42,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 05:18:42,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:42,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 05:18:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2422820] [2025-02-06 05:18:43,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2422820] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:18:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379483583] [2025-02-06 05:18:43,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:43,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:43,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:18:43,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 05:18:43,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 05:18:43,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 05:18:43,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:43,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:43,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-06 05:18:43,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:18:43,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:18:43,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:18:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 05:18:44,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:18:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 05:18:44,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379483583] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:18:44,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:18:44,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 12] total 29 [2025-02-06 05:18:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311097903] [2025-02-06 05:18:44,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:18:44,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-06 05:18:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:44,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-06 05:18:44,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2025-02-06 05:18:44,906 INFO L87 Difference]: Start difference. First operand 168 states and 226 transitions. Second operand has 29 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 10 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2025-02-06 05:18:48,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:52,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:57,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:18:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:18:58,414 INFO L93 Difference]: Finished difference Result 578 states and 841 transitions. [2025-02-06 05:18:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-06 05:18:58,415 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 10 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) Word has length 88 [2025-02-06 05:18:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:18:58,419 INFO L225 Difference]: With dead ends: 578 [2025-02-06 05:18:58,419 INFO L226 Difference]: Without dead ends: 425 [2025-02-06 05:18:58,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=364, Invalid=2942, Unknown=0, NotChecked=0, Total=3306 [2025-02-06 05:18:58,422 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 226 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 94 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2025-02-06 05:18:58,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1294 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 969 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2025-02-06 05:18:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-02-06 05:18:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 290. [2025-02-06 05:18:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 214 states have (on average 1.280373831775701) internal successors, (274), 227 states have internal predecessors, (274), 45 states have call successors, (45), 19 states have call predecessors, (45), 30 states have return successors, (80), 43 states have call predecessors, (80), 41 states have call successors, (80) [2025-02-06 05:18:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 399 transitions. [2025-02-06 05:18:58,468 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 399 transitions. Word has length 88 [2025-02-06 05:18:58,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:18:58,468 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 399 transitions. [2025-02-06 05:18:58,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.464285714285714) internal successors, (125), 26 states have internal predecessors, (125), 10 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2025-02-06 05:18:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 399 transitions. [2025-02-06 05:18:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 05:18:58,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:18:58,471 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:18:58,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 05:18:58,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 05:18:58,672 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:18:58,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:18:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash 22505925, now seen corresponding path program 1 times [2025-02-06 05:18:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:18:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651611760] [2025-02-06 05:18:58,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:18:58,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 05:18:58,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 05:18:58,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:58,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:18:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:18:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651611760] [2025-02-06 05:18:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651611760] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:18:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455316179] [2025-02-06 05:18:59,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:18:59,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:18:59,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:18:59,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:18:59,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 05:18:59,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 05:18:59,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 05:18:59,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:18:59,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:18:59,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-06 05:18:59,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:18:59,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:18:59,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:18:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 05:18:59,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:18:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-06 05:18:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455316179] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:18:59,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:18:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 8] total 25 [2025-02-06 05:18:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455239974] [2025-02-06 05:18:59,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:18:59,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 05:18:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:18:59,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 05:18:59,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2025-02-06 05:18:59,746 INFO L87 Difference]: Start difference. First operand 290 states and 399 transitions. Second operand has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 8 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2025-02-06 05:19:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:00,847 INFO L93 Difference]: Finished difference Result 959 states and 1426 transitions. [2025-02-06 05:19:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 05:19:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 8 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 90 [2025-02-06 05:19:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:00,851 INFO L225 Difference]: With dead ends: 959 [2025-02-06 05:19:00,851 INFO L226 Difference]: Without dead ends: 684 [2025-02-06 05:19:00,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2101, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 05:19:00,855 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 186 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:00,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 881 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 05:19:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-02-06 05:19:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 413. [2025-02-06 05:19:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 322 states have (on average 1.3043478260869565) internal successors, (420), 336 states have internal predecessors, (420), 49 states have call successors, (49), 19 states have call predecessors, (49), 41 states have return successors, (104), 57 states have call predecessors, (104), 45 states have call successors, (104) [2025-02-06 05:19:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 573 transitions. [2025-02-06 05:19:00,899 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 573 transitions. Word has length 90 [2025-02-06 05:19:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:00,900 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 573 transitions. [2025-02-06 05:19:00,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 23 states have internal predecessors, (114), 8 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2025-02-06 05:19:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 573 transitions. [2025-02-06 05:19:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 05:19:00,904 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:00,904 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:00,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:01,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 05:19:01,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:01,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1855698937, now seen corresponding path program 1 times [2025-02-06 05:19:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247588133] [2025-02-06 05:19:01,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:01,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:01,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 05:19:01,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 05:19:01,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:01,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:19:01,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:01,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247588133] [2025-02-06 05:19:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247588133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:01,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482729285] [2025-02-06 05:19:01,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:01,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:01,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:01,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:01,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 05:19:01,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 05:19:01,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 05:19:01,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:01,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:01,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 05:19:01,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 05:19:01,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482729285] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:01,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-02-06 05:19:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554939848] [2025-02-06 05:19:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:01,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 05:19:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:01,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 05:19:01,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 05:19:01,459 INFO L87 Difference]: Start difference. First operand 413 states and 573 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:01,596 INFO L93 Difference]: Finished difference Result 957 states and 1354 transitions. [2025-02-06 05:19:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 05:19:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2025-02-06 05:19:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:01,600 INFO L225 Difference]: With dead ends: 957 [2025-02-06 05:19:01,600 INFO L226 Difference]: Without dead ends: 559 [2025-02-06 05:19:01,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-06 05:19:01,602 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 99 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:01,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 223 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:19:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2025-02-06 05:19:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2025-02-06 05:19:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 356 states have (on average 1.303370786516854) internal successors, (464), 372 states have internal predecessors, (464), 51 states have call successors, (51), 19 states have call predecessors, (51), 45 states have return successors, (118), 61 states have call predecessors, (118), 47 states have call successors, (118) [2025-02-06 05:19:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 633 transitions. [2025-02-06 05:19:01,638 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 633 transitions. Word has length 90 [2025-02-06 05:19:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:01,638 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 633 transitions. [2025-02-06 05:19:01,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 633 transitions. [2025-02-06 05:19:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 05:19:01,640 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:01,640 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:01,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:01,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 05:19:01,841 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:01,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash -722193558, now seen corresponding path program 1 times [2025-02-06 05:19:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917380046] [2025-02-06 05:19:01,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:01,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:01,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:01,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:01,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-06 05:19:02,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917380046] [2025-02-06 05:19:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917380046] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922198201] [2025-02-06 05:19:02,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:02,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:02,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:02,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:02,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 05:19:02,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:02,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:02,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:02,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:02,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-06 05:19:02,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:02,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:19:02,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 05:19:06,681 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_3| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_3|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_3|) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_3| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_3|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_3|) 0)))) is different from true [2025-02-06 05:19:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-06 05:19:14,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922198201] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:14,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:14,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2025-02-06 05:19:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114078634] [2025-02-06 05:19:14,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:14,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 05:19:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:14,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 05:19:14,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=485, Unknown=3, NotChecked=44, Total=600 [2025-02-06 05:19:14,932 INFO L87 Difference]: Start difference. First operand 453 states and 633 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:19,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:19:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:19,515 INFO L93 Difference]: Finished difference Result 1002 states and 1442 transitions. [2025-02-06 05:19:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 05:19:19,516 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2025-02-06 05:19:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:19,519 INFO L225 Difference]: With dead ends: 1002 [2025-02-06 05:19:19,520 INFO L226 Difference]: Without dead ends: 555 [2025-02-06 05:19:19,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=109, Invalid=762, Unknown=3, NotChecked=56, Total=930 [2025-02-06 05:19:19,522 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 51 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:19,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 705 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 416 Invalid, 1 Unknown, 142 Unchecked, 4.4s Time] [2025-02-06 05:19:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-02-06 05:19:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 490. [2025-02-06 05:19:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 384 states have (on average 1.2994791666666667) internal successors, (499), 406 states have internal predecessors, (499), 57 states have call successors, (57), 22 states have call predecessors, (57), 48 states have return successors, (130), 61 states have call predecessors, (130), 53 states have call successors, (130) [2025-02-06 05:19:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 686 transitions. [2025-02-06 05:19:19,575 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 686 transitions. Word has length 91 [2025-02-06 05:19:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:19,575 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 686 transitions. [2025-02-06 05:19:19,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 686 transitions. [2025-02-06 05:19:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 05:19:19,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:19,578 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:19,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:19,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:19,783 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:19,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1637113451, now seen corresponding path program 1 times [2025-02-06 05:19:19,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:19,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864785116] [2025-02-06 05:19:19,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:19,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:19,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:19,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:19,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:19,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-06 05:19:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864785116] [2025-02-06 05:19:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864785116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623933957] [2025-02-06 05:19:19,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:19,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:19,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:19,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 05:19:20,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:20,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:20,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:20,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:20,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 05:19:20,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 05:19:20,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:19:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-06 05:19:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623933957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:19:20,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:19:20,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2025-02-06 05:19:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984992675] [2025-02-06 05:19:20,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:19:20,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 05:19:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:20,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 05:19:20,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2025-02-06 05:19:20,613 INFO L87 Difference]: Start difference. First operand 490 states and 686 transitions. Second operand has 25 states, 22 states have (on average 5.590909090909091) internal successors, (123), 25 states have internal predecessors, (123), 10 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2025-02-06 05:19:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:21,013 INFO L93 Difference]: Finished difference Result 1289 states and 1911 transitions. [2025-02-06 05:19:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 05:19:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.590909090909091) internal successors, (123), 25 states have internal predecessors, (123), 10 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) Word has length 91 [2025-02-06 05:19:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:21,018 INFO L225 Difference]: With dead ends: 1289 [2025-02-06 05:19:21,019 INFO L226 Difference]: Without dead ends: 583 [2025-02-06 05:19:21,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 05:19:21,023 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 218 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:21,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 606 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 05:19:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-02-06 05:19:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 506. [2025-02-06 05:19:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 390 states have (on average 1.2871794871794873) internal successors, (502), 422 states have internal predecessors, (502), 64 states have call successors, (64), 22 states have call predecessors, (64), 51 states have return successors, (162), 61 states have call predecessors, (162), 60 states have call successors, (162) [2025-02-06 05:19:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 728 transitions. [2025-02-06 05:19:21,072 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 728 transitions. Word has length 91 [2025-02-06 05:19:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:21,072 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 728 transitions. [2025-02-06 05:19:21,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.590909090909091) internal successors, (123), 25 states have internal predecessors, (123), 10 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2025-02-06 05:19:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 728 transitions. [2025-02-06 05:19:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 05:19:21,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:21,075 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:21,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 05:19:21,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:21,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:21,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 46976457, now seen corresponding path program 1 times [2025-02-06 05:19:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511196632] [2025-02-06 05:19:21,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:21,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:21,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:21,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:21,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-06 05:19:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511196632] [2025-02-06 05:19:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511196632] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828724796] [2025-02-06 05:19:21,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:21,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:21,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:21,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:21,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 05:19:21,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:21,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:21,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:21,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:21,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 05:19:21,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 05:19:21,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828724796] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-06 05:19:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025129750] [2025-02-06 05:19:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:21,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 05:19:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:21,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 05:19:21,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:19:21,525 INFO L87 Difference]: Start difference. First operand 506 states and 728 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:21,591 INFO L93 Difference]: Finished difference Result 827 states and 1179 transitions. [2025-02-06 05:19:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 05:19:21,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2025-02-06 05:19:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:21,594 INFO L225 Difference]: With dead ends: 827 [2025-02-06 05:19:21,594 INFO L226 Difference]: Without dead ends: 514 [2025-02-06 05:19:21,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:19:21,596 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:21,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:19:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2025-02-06 05:19:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 506. [2025-02-06 05:19:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 390 states have (on average 1.2820512820512822) internal successors, (500), 422 states have internal predecessors, (500), 64 states have call successors, (64), 22 states have call predecessors, (64), 51 states have return successors, (162), 61 states have call predecessors, (162), 60 states have call successors, (162) [2025-02-06 05:19:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 726 transitions. [2025-02-06 05:19:21,637 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 726 transitions. Word has length 91 [2025-02-06 05:19:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:21,638 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 726 transitions. [2025-02-06 05:19:21,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 726 transitions. [2025-02-06 05:19:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 05:19:21,641 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:21,641 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:21,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:21,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:21,846 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:21,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash -193563672, now seen corresponding path program 1 times [2025-02-06 05:19:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658890176] [2025-02-06 05:19:21,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:21,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:21,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:21,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:21,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-06 05:19:21,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658890176] [2025-02-06 05:19:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658890176] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059905332] [2025-02-06 05:19:21,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:21,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:21,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:21,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 05:19:22,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:22,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:22,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:22,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:22,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 05:19:22,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 05:19:22,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059905332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:22,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:22,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-06 05:19:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567782385] [2025-02-06 05:19:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 05:19:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:22,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 05:19:22,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:19:22,101 INFO L87 Difference]: Start difference. First operand 506 states and 726 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:22,135 INFO L93 Difference]: Finished difference Result 785 states and 1129 transitions. [2025-02-06 05:19:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 05:19:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2025-02-06 05:19:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:22,137 INFO L225 Difference]: With dead ends: 785 [2025-02-06 05:19:22,137 INFO L226 Difference]: Without dead ends: 266 [2025-02-06 05:19:22,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:19:22,141 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:22,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:19:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-02-06 05:19:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 244. [2025-02-06 05:19:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 185 states have (on average 1.2378378378378379) internal successors, (229), 198 states have internal predecessors, (229), 33 states have call successors, (33), 14 states have call predecessors, (33), 25 states have return successors, (60), 31 states have call predecessors, (60), 30 states have call successors, (60) [2025-02-06 05:19:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 322 transitions. [2025-02-06 05:19:22,158 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 322 transitions. Word has length 91 [2025-02-06 05:19:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:22,158 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 322 transitions. [2025-02-06 05:19:22,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 322 transitions. [2025-02-06 05:19:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 05:19:22,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:22,160 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:22,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:22,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 05:19:22,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:22,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash -284184055, now seen corresponding path program 1 times [2025-02-06 05:19:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155349710] [2025-02-06 05:19:22,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:22,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:22,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:22,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:22,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 05:19:22,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155349710] [2025-02-06 05:19:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155349710] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157527640] [2025-02-06 05:19:22,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:22,473 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:22,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 05:19:22,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-06 05:19:22,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-06 05:19:22,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:22,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:22,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 05:19:22,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 05:19:22,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157527640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-06 05:19:22,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50713619] [2025-02-06 05:19:22,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:22,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 05:19:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:22,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 05:19:22,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:19:22,694 INFO L87 Difference]: Start difference. First operand 244 states and 322 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:22,717 INFO L93 Difference]: Finished difference Result 427 states and 548 transitions. [2025-02-06 05:19:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 05:19:22,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2025-02-06 05:19:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:22,730 INFO L225 Difference]: With dead ends: 427 [2025-02-06 05:19:22,731 INFO L226 Difference]: Without dead ends: 204 [2025-02-06 05:19:22,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 05:19:22,732 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:22,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:19:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-02-06 05:19:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2025-02-06 05:19:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 147 states have (on average 1.1904761904761905) internal successors, (175), 156 states have internal predecessors, (175), 29 states have call successors, (29), 14 states have call predecessors, (29), 21 states have return successors, (42), 27 states have call predecessors, (42), 26 states have call successors, (42) [2025-02-06 05:19:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 246 transitions. [2025-02-06 05:19:22,788 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 246 transitions. Word has length 91 [2025-02-06 05:19:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:22,788 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 246 transitions. [2025-02-06 05:19:22,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 05:19:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 246 transitions. [2025-02-06 05:19:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-06 05:19:22,789 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:22,789 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:22,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 05:19:22,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 05:19:22,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:22,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1380745280, now seen corresponding path program 1 times [2025-02-06 05:19:22,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:22,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558850988] [2025-02-06 05:19:22,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:22,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:23,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-02-06 05:19:23,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-02-06 05:19:23,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:23,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 05:19:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558850988] [2025-02-06 05:19:23,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558850988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997637731] [2025-02-06 05:19:23,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:23,165 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:23,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 05:19:23,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-02-06 05:19:23,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-02-06 05:19:23,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:23,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:23,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-06 05:19:23,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:23,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2025-02-06 05:19:23,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:23,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 05:19:23,454 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2025-02-06 05:19:23,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 43 [2025-02-06 05:19:23,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:23,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2025-02-06 05:19:24,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 05:19:24,129 INFO L349 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2025-02-06 05:19:24,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 32 [2025-02-06 05:19:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 05:19:24,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:19:24,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2025-02-06 05:19:24,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-02-06 05:19:24,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-02-06 05:19:24,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-02-06 05:19:24,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:19:24,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 39 [2025-02-06 05:19:24,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:19:24,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 325 treesize of output 301 [2025-02-06 05:19:24,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 404 [2025-02-06 05:19:24,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2025-02-06 05:19:24,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2025-02-06 05:19:24,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:19:24,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 71 [2025-02-06 05:19:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 05:19:24,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997637731] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:19:24,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:19:24,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 12] total 28 [2025-02-06 05:19:24,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022275593] [2025-02-06 05:19:24,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:19:24,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 05:19:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:24,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 05:19:24,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2025-02-06 05:19:24,885 INFO L87 Difference]: Start difference. First operand 198 states and 246 transitions. Second operand has 28 states, 25 states have (on average 5.52) internal successors, (138), 27 states have internal predecessors, (138), 11 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2025-02-06 05:19:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:26,762 INFO L93 Difference]: Finished difference Result 432 states and 549 transitions. [2025-02-06 05:19:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 05:19:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 5.52) internal successors, (138), 27 states have internal predecessors, (138), 11 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) Word has length 92 [2025-02-06 05:19:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:26,764 INFO L225 Difference]: With dead ends: 432 [2025-02-06 05:19:26,764 INFO L226 Difference]: Without dead ends: 327 [2025-02-06 05:19:26,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 161 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 05:19:26,766 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 89 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:26,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1870 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 05:19:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-02-06 05:19:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 301. [2025-02-06 05:19:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 225 states have (on average 1.1955555555555555) internal successors, (269), 239 states have internal predecessors, (269), 42 states have call successors, (42), 20 states have call predecessors, (42), 33 states have return successors, (66), 41 states have call predecessors, (66), 38 states have call successors, (66) [2025-02-06 05:19:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 377 transitions. [2025-02-06 05:19:26,792 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 377 transitions. Word has length 92 [2025-02-06 05:19:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:26,792 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 377 transitions. [2025-02-06 05:19:26,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 5.52) internal successors, (138), 27 states have internal predecessors, (138), 11 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2025-02-06 05:19:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 377 transitions. [2025-02-06 05:19:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-06 05:19:26,811 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:26,812 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:26,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 05:19:27,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 05:19:27,013 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:27,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -338567043, now seen corresponding path program 1 times [2025-02-06 05:19:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106047074] [2025-02-06 05:19:27,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:27,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-06 05:19:27,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-06 05:19:27,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:27,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-06 05:19:27,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106047074] [2025-02-06 05:19:27,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106047074] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128116264] [2025-02-06 05:19:27,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:27,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:27,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:27,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:27,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 05:19:27,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-06 05:19:27,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-06 05:19:27,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:27,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:27,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-02-06 05:19:27,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:27,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2025-02-06 05:19:27,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-02-06 05:19:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 05:19:30,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:19:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 05:19:32,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128116264] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:19:32,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:19:32,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 26, 21] total 50 [2025-02-06 05:19:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260431107] [2025-02-06 05:19:32,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:19:32,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-06 05:19:32,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:32,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-06 05:19:32,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 05:19:32,281 INFO L87 Difference]: Start difference. First operand 301 states and 377 transitions. Second operand has 50 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 42 states have internal predecessors, (167), 13 states have call successors, (24), 4 states have call predecessors, (24), 13 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) [2025-02-06 05:19:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:35,977 INFO L93 Difference]: Finished difference Result 642 states and 801 transitions. [2025-02-06 05:19:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-06 05:19:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 42 states have internal predecessors, (167), 13 states have call successors, (24), 4 states have call predecessors, (24), 13 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) Word has length 103 [2025-02-06 05:19:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:35,979 INFO L225 Difference]: With dead ends: 642 [2025-02-06 05:19:35,979 INFO L226 Difference]: Without dead ends: 350 [2025-02-06 05:19:35,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=505, Invalid=6467, Unknown=0, NotChecked=0, Total=6972 [2025-02-06 05:19:35,982 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 133 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:35,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1783 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 05:19:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-02-06 05:19:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 299. [2025-02-06 05:19:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 225 states have (on average 1.2) internal successors, (270), 236 states have internal predecessors, (270), 42 states have call successors, (42), 20 states have call predecessors, (42), 31 states have return successors, (59), 42 states have call predecessors, (59), 38 states have call successors, (59) [2025-02-06 05:19:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 371 transitions. [2025-02-06 05:19:36,027 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 371 transitions. Word has length 103 [2025-02-06 05:19:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:36,027 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 371 transitions. [2025-02-06 05:19:36,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 42 states have internal predecessors, (167), 13 states have call successors, (24), 4 states have call predecessors, (24), 13 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) [2025-02-06 05:19:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 371 transitions. [2025-02-06 05:19:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 05:19:36,029 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:36,029 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:36,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 05:19:36,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 05:19:36,229 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:36,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash -726398770, now seen corresponding path program 1 times [2025-02-06 05:19:36,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:36,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387382321] [2025-02-06 05:19:36,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:36,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:36,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:36,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:36,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-06 05:19:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387382321] [2025-02-06 05:19:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387382321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6824786] [2025-02-06 05:19:36,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:36,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:36,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:36,861 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:36,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 05:19:37,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:37,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:37,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:37,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:37,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 05:19:37,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:37,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-06 05:19:37,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-06 05:19:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2025-02-06 05:19:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 05:19:37,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 47 [2025-02-06 05:19:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-02-06 05:19:38,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:19:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6824786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:19:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2025-02-06 05:19:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080800947] [2025-02-06 05:19:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:38,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 05:19:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:38,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 05:19:38,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2025-02-06 05:19:38,748 INFO L87 Difference]: Start difference. First operand 299 states and 371 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:39,200 INFO L93 Difference]: Finished difference Result 393 states and 480 transitions. [2025-02-06 05:19:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 05:19:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 106 [2025-02-06 05:19:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:39,203 INFO L225 Difference]: With dead ends: 393 [2025-02-06 05:19:39,206 INFO L226 Difference]: Without dead ends: 306 [2025-02-06 05:19:39,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-02-06 05:19:39,207 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 38 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:39,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 378 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 05:19:39,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2025-02-06 05:19:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 299. [2025-02-06 05:19:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 225 states have (on average 1.1955555555555555) internal successors, (269), 236 states have internal predecessors, (269), 42 states have call successors, (42), 20 states have call predecessors, (42), 31 states have return successors, (59), 42 states have call predecessors, (59), 38 states have call successors, (59) [2025-02-06 05:19:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 370 transitions. [2025-02-06 05:19:39,237 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 370 transitions. Word has length 106 [2025-02-06 05:19:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:39,238 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 370 transitions. [2025-02-06 05:19:39,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 370 transitions. [2025-02-06 05:19:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 05:19:39,239 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:39,239 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:39,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 05:19:39,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:39,443 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:39,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash 781153039, now seen corresponding path program 1 times [2025-02-06 05:19:39,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:39,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684322397] [2025-02-06 05:19:39,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:39,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:39,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:39,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:39,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 05:19:39,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:39,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684322397] [2025-02-06 05:19:39,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684322397] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:39,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:19:39,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 05:19:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310441672] [2025-02-06 05:19:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:39,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 05:19:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:39,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 05:19:39,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 05:19:39,927 INFO L87 Difference]: Start difference. First operand 299 states and 370 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:40,138 INFO L93 Difference]: Finished difference Result 557 states and 674 transitions. [2025-02-06 05:19:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 05:19:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 106 [2025-02-06 05:19:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:40,140 INFO L225 Difference]: With dead ends: 557 [2025-02-06 05:19:40,140 INFO L226 Difference]: Without dead ends: 297 [2025-02-06 05:19:40,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-06 05:19:40,141 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 24 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:40,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 398 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:19:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2025-02-06 05:19:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2025-02-06 05:19:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 221 states have (on average 1.1855203619909502) internal successors, (262), 232 states have internal predecessors, (262), 42 states have call successors, (42), 20 states have call predecessors, (42), 31 states have return successors, (59), 42 states have call predecessors, (59), 38 states have call successors, (59) [2025-02-06 05:19:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 363 transitions. [2025-02-06 05:19:40,175 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 363 transitions. Word has length 106 [2025-02-06 05:19:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:40,176 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 363 transitions. [2025-02-06 05:19:40,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 363 transitions. [2025-02-06 05:19:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 05:19:40,177 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:40,177 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:40,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 05:19:40,177 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:40,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2134462736, now seen corresponding path program 1 times [2025-02-06 05:19:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:40,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127292297] [2025-02-06 05:19:40,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:40,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:40,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:40,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:40,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:40,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 05:19:40,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:40,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127292297] [2025-02-06 05:19:40,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127292297] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:19:40,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:19:40,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 05:19:40,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53606473] [2025-02-06 05:19:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:19:40,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 05:19:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:19:40,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 05:19:40,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 05:19:40,839 INFO L87 Difference]: Start difference. First operand 295 states and 363 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:19:41,084 INFO L93 Difference]: Finished difference Result 388 states and 471 transitions. [2025-02-06 05:19:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 05:19:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 106 [2025-02-06 05:19:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:19:41,087 INFO L225 Difference]: With dead ends: 388 [2025-02-06 05:19:41,087 INFO L226 Difference]: Without dead ends: 298 [2025-02-06 05:19:41,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-06 05:19:41,089 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 27 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:19:41,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 374 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:19:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2025-02-06 05:19:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2025-02-06 05:19:41,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 217 states have (on average 1.1843317972350231) internal successors, (257), 228 states have internal predecessors, (257), 42 states have call successors, (42), 20 states have call predecessors, (42), 31 states have return successors, (59), 42 states have call predecessors, (59), 38 states have call successors, (59) [2025-02-06 05:19:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 358 transitions. [2025-02-06 05:19:41,144 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 358 transitions. Word has length 106 [2025-02-06 05:19:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:19:41,144 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 358 transitions. [2025-02-06 05:19:41,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 05:19:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 358 transitions. [2025-02-06 05:19:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 05:19:41,145 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:19:41,145 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:19:41,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 05:19:41,146 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:19:41,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:19:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1289990865, now seen corresponding path program 1 times [2025-02-06 05:19:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:19:41,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085122098] [2025-02-06 05:19:41,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:41,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:19:41,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:41,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:41,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:41,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-06 05:19:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:19:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085122098] [2025-02-06 05:19:41,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085122098] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:19:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085415992] [2025-02-06 05:19:41,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:19:41,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:19:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:19:41,488 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:19:41,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 05:19:41,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 05:19:41,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 05:19:41,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:19:41,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:19:41,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-02-06 05:19:41,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:19:41,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 05:19:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 05:19:42,059 INFO L312 TraceCheckSpWp]: Computing backward predicates...